Crawl Space Sealing

An unsealed crawl space is one of the leading sources of moisture, mold, radon, and soil gas infiltration into the home above. Encapsulation creates a continuous barrier between the ground and the living space.

• Lower energy costs — reduces heat loss through floors and eliminates humid air drawn into the HVAC system.
• Eliminate mold risk — ground moisture drives mold growth in floor joists and insulation. A sealed crawl removes the moisture source.
• Block radon and soil gases — continuous poly liner prevents radon and other soil gases from entering the home through the crawl space floor.
• Clean storage area — a sealed, conditioned crawl space becomes usable dry storage.

Heavy-duty 90-mil polyethylene liner installs on crawl space floors and walls to seal out ground moisture, soil gases, and radon. Available in 58-inch × 125ft rolls.

• 90-mil thickness for long-term durability — resists puncture from debris and foot traffic.
• Covers both floor and wall surfaces from a single roll.
• Seal seams with 1-inch or 4-inch seam tape for a continuous moisture barrier.

The EmeSeal combo liner fuses a drain fabric layer with a white polyethylene floor liner into one product. The drain fabric allows water to move laterally to the sump while the poly liner blocks moisture vapor and soil gases from rising into the crawl space.

• For crawl spaces with active water intrusion or seasonal ground water.
• Eliminates the need for a separate drainage mat and vapor barrier.
• Available in 58-inch × 62ft rolls.
• Use standard 90-mil liner on walls; combo liner on the floor where drainage is required.

• 1-inch Seam Lock Tape — 45ft roll — for seaming liner panels at overlaps and wall–floor transitions.
• 4-inch Seam Tape — 108ft roll — 35-mil rubber-based double-sided adhesive for sealing seams in 90-mil liner. For larger installations and main floor seams.

Overlap liner panels by a minimum of 12 inches at all seams. Tape all seams, wall–floor joints, and penetrations for a continuous sealed system.